Material working machine



July 9, 1935. D. v. WATERS MATERIAL WORKING MACHINE Filed June 1, 1933 FIG. 2.

INVENTOR 0. v. WATERS A frog/var Patented July 9, 1935 WEE STATES series PATEN MATERIAL wonnnvc moms Application June 1, 1933. Serial No. steer-1 1 Claim.

This invention relates to material working ma-- chines and in particular to a unitary grinding machine in which the abrading unit and the dust removing and collecting unit are mounted on and in a single supporting and housing structure.

An object of the invention is to provide a unitary material working machine and refuse collector of simple, neat and compact construction and provided with means to obviate and suppress the noisiness hitherto an objectionable feature of such devices.

With this and other objects in view one embodiment of the invention contemplates a machine of the character described having a grinding unit conveniently mounted upon a combined support and housing within which is housed a refuse removing and collecting unit to catch and collect the dust produced by grinding, a principal characterizing feature being means interposedbetween the dust collecting unit and the housing to prevent the transmission of vibratory and other noise producing disturbances from the unit to the housmg. 7

Other objects and characterizing features of the invention will appear from the following detailed description of one embodiment thereof taken in connection with the accompanying drawing in which the same reference numerals are applied to identical parts in the several'flgures and in which Fig. l is a view in rear elevation of a unitary grinding machine constructed in accordance with the invention;

Fig. 2 is a view thereof in side elevation from the left'side of Fig. l;

Fig. 3 is an enlarged fragmentary sectional view on the lined-3 of Fig. 1, and

Fig. 4 is an enlarged fragmentary sectional view w on the line 44 of Fig. i.

In the embodiment of the invention herein disclosed, an upright, box like housing generally indicated by the numeral to has a base or low pedestal II and a flat top I2. A grinding unit I3 of any approved construction and here, shown as comprising a motor it direct connected to each it communicates at the bottom thereof with the chamber is through an appropriate aperture in 55 the top 9 2; The septum ii is centrally perforated and formed with a relatively short downwardly extending cylindrical outlet connection it.

'At about the middle of its height, the housing It is formed with an integral internal horizontal ledge 26 extending substantially across each end 55 wall of the housing from front to back. These two ledges support a base it on which is mounted a dust collecting unit of any approved construction here indicated as comprising a motor 22 direct connected to a suction? fan 23. The wide lit intake pipe 2t of the suction fan embraces with its upper end the downwardly extending extremity 'of the outlet connection it. A collar 25 of sponge rubber or. analogous sound and vibration insulating and damping material is interposed is and seals the joint between the intake pipe 2% and the connection i9.

The fan 23 in well known fashion discharges dust sucked down from the chamber it and the hoods Iii v through an aperture in the housing of 2a the fan and through an appropriate communicating aperture in the base 2i into a bag or other suitable container 26 removably attached in any convenient way to the under side of the base it. The fan 23 also discharges dust free air through as its outlet pipe 21 which opens in proximity to but not in contact with an adjacent foraminous plate I 28 forming part of or attached over an aperture in the rear wall of the housing it.

, The base 2| is removably attached to and supported on the ledges Zil in such a way as to suppress and prevent any vibratory or other noise producing disturbance generated in or by the dust collecting unit from being transmitted to the housing I!) by the attaching means. To this end a strip 29 of sound insulating and vibration suppressing material such as sponge rubber or the like is-interposed between each of the ledges Zil and the base Zl The base is provided near each corner thereof witha vertical perforation 30 and in each of these perforations is positioned a metal bolt 3|, the perforation being of considerably larger diameter than the bolt so that the latter does not touch the base. On the upper face of the base and surrounding the bolt is a washer 32 of sponge rubber or similar material and on the washer 32 is a second washer 33 of metal. A nut 34 of metal is screwed down on the threaded upper end'oi the bolt 3i and against the washer as drawing the bolt upward. The lower end of the bolt is recurved into a hook with an upwardly extending tip 3 5. On the tip 3% rests a disc of metal 35 and a pad or cushion it or sponge rubber or the like is interposed in tu'in between the disc at and the under iace of the ledge it. Thus it for inspection, repair or disassembly,

tightening down the nut 34 tends to clamp the base 2i, strip 2! and ledge 20 firmly together while the various vibration insulating members 20, 32 and 38 prevent transmission of disturbance from the base to the ledge either directly or through the clamping means.

The rear wall of the housing II is formed with a large opening provided with a door 31. This opening extends vertically from near the pedestal ll up to near the edge of the septum l1 thus rendering nearly the entire interior of the housing accessible when the door 31 is opened. Thus the removal of the bag 28 for emptying and its replacement are rendered conveniently easy. Also it makes convenient any necessary inspection of the dust collecting unit or eventual dismounting and removal of the same for adjustment or repair.

The entire apparatus thus comprises three principal component units, the housing, the grinding unit, and the refuse collecting unit detachably associated into a unitary, compact and eflicient structure with all parts conveniently accessible and with the refuse collecting unit entirely insulated from the rest with respect to noise transmission while being completely enclosed and muiiied within the housing. It will be noted that the phrases dust collecting unit" and "refuse collecting unit as herein used mean a device which, as clearly shown on the drawing, actively collects or gathers dust or other refuse and a mereinert pan or other receptacle is not an equivalent thereof.

The embodiment of the invention herein disclosed is illustrative merely and may be modified and departed from in many ways without departing from the spirit and scope of the invention as pointed out in and limited only by the appended claim.

What is claimed is:

A material working machine, having a housing provided with a supporting member, a refuse collecting unit mounted within the housing upon the supporting member, and means interposed between the housing and the unit to prevent the transmission of disturbances from one to the other while detachably attaching the two together .comprising clamping means to clamp the unit to the support, vibration insulating means interposed between the unit and the support, vibration insulating means interposed between the clamping means and the unit, and vibration insulating means interposed between the clamping means and the support.

DANIEL V. WATERS. 

